me vio pero miró hacia otro ladoshe saw me, but she looked the other way;estaba mirando por la ventanahe was looking out of the window;miré por el agujeroI looked through the hole;miró alrededor para ver si veía a alguienshe looked around to see if she could see anyone

debes de mirar por tus hermanosyou should look after o take care of your brothers;mira mucho por su ropashe takes great care of her clothes;solo mira por sus intereseshe only looks after his own interests;tienes que mirar por ti mismoyou have to look out for yourself